/ Dictionary / Index A arillate: Meaning and Definition of Find definitions for: ar•il•late Pronunciation: (ar'u-lāt", -lit), [key] — adj. Bot. having an aril. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: arillate (Thesaurus) aril Arimathaea Related Content Daily Word Quiz: pedagogy Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language